Input: cros_ec_keyb - fix an invalid memory access
In the Linux kernel, the following vulnerability has been resolved:
Input: cros_ec_keyb - fix an invalid memory access
If cros_ec_keyb_register_matrix() isn't called (due to
`buttons_switches_only`) in cros_ec_keyb_probe(), `ckdev->idev` remains
NULL. An invalid memory access is observed in cros_ec_keyb_process()
when receiving an EC_MKBP_EVENT_KEY_MATRIX event in cros_ec_keyb_work()
in such case.
Unable to handle kernel read from unreadable memory at virtual address 0000000000000028
...
x3 : 0000000000000000 x2 : 0000000000000000
x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
input_event
cros_ec_keyb_work
blocking_notifier_call_chain
ec_irq_thread
It's still unknown about why the kernel receives such malformed event,
in any cases, the kernel shouldn't access `ckdev->idev` and friends if
the driver doesn't intend to initialize them.
CVE 정보
EPSS
EPSS는 취약점이 악용될 가능성을 예측하는 점수 모델입니다.
EPSS 점수
EPSS 모델은 0과 1(0~100%) 사이의 확률 점수를 생성합니다. 점수가 높을수록 취약점이 악용될 가능성이 높습니다.
날짜
EPSS V0
EPSS V1
EPSS V2 (> 2022-02-04)
EPSS V3 (> 2025-03-07)
EPSS V4 (> 2025-03-17)
2025-12-05
–
–
–
–
0.02%
2025-12-07
–
–
–
–
0.02%
2025-12-10
–
–
–
–
0.03%
2026-01-03
–
–
–
–
0.02%
2026-01-05
–
–
–
–
0.03%
2026-01-16
–
–
–
–
0.03%
2026-01-18
–
–
–
–
0.05%
2026-02-22
–
–
–
–
0.04%
2026-03-08
–
–
–
–
0.04%
2026-03-15
–
–
–
–
0.04%
2026-03-22
–
–
–
–
0.04%
2026-04-05
–
–
–
–
0.05%
2026-05-10
–
–
–
–
0.02%
2026-05-17
–
–
–
–
0.03%
2026-06-07
–
–
–
–
0.04%
2026-06-14
–
–
–
–
0.04%
EPSS 백분위수
백분위수는 EPSS 점수에 따라 CVE의 순위를 매기는 데 사용됩니다. 예를 들어 EPSS 점수 기준 95번째 백분위수의 CVE는 다른 CVE의 95%보다 악용될 가능성이 높습니다.